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package tim.prune.gui.map;
/**
* Class to provide a map source for all OSM-like sources
* (eg mapnik, opencyclemap, openpistemap etc).
* These can be single-layer or double-layer sources with tiles
* in various formats (default png)
*/
public class OsmMapSource extends MapSource
{
/** Maximum zoom level */
private final int _maxZoom;
/**
* Constructor giving single name and url
* @param inName source name
* @param inUrl base url
*/
public OsmMapSource(String inName, String inUrl)
{
this(inName, inUrl, "png", null, null, 18);
}
/**
* Constructor giving name, two strings and maximum zoom
* @param inName source name
* @param inStr1 base layer url
* @param inStr2 either base layer extension or upper layer url
* @param inMaxZoom maximum zoom level
*/
public OsmMapSource(String inName, String inStr1, String inStr2, int inMaxZoom)
{
super(inName);
if (inStr2 != null && inStr2.length() == 3) {
init(inStr1, inStr2, null, null);
}
else {
init(inStr1, "png", inStr2, "png");
}
_maxZoom = inMaxZoom;
}
/**
* Constructor giving name, urls, extensions and maximum zoom
* @param inName source name
* @param inUrl1 base layer url
* @param inExt1 extension for base layer
* @param inUrl2 upper layer url
* @param inExt2 extension for top layer
* @param inMaxZoom maximum zoom level
*/
public OsmMapSource(String inName, String inUrl1, String inExt1,
String inUrl2, String inExt2, int inMaxZoom)
{
super(inName);
init(inUrl1, inExt1, inUrl2, inExt2);
_maxZoom = inMaxZoom;
}
/**
* Initialisation giving urls, extensions and maximum zoom
* @param inUrl1 base layer url
* @param inExt1 extension for base layer
* @param inUrl2 upper layer url
* @param inExt2 extension for top layer
*/
private void init(String inUrl1, String inExt1, String inUrl2, String inExt2)
{
addLayer(fixBaseUrl(inUrl1), inExt1);
addLayer(fixBaseUrl(inUrl2), inExt2);
}
/**
* Construct a new map source from its config string
* @param inConfigString string from Config, separated by semicolons
* @return new map source, or null if not parseable
*/
public static OsmMapSource fromConfig(String inConfigString)
{
OsmMapSource source = null;
if (inConfigString.startsWith("o:"))
{
String[] items = inConfigString.substring(2).split(";");
try {
if (items.length == 3) { // single source url
source = new OsmMapSource(items[0], items[1], null, Integer.parseInt(items[2]));
}
else if (items.length == 4) { // two urls or one url plus extension
source = new OsmMapSource(items[0], items[1], items[2], Integer.parseInt(items[3]));
}
else if (items.length == 6) { // two urls and two extensions
source = new OsmMapSource(items[0], items[1], items[2], items[3], items[4], Integer.parseInt(items[5]));
}
} catch (NumberFormatException ignored) {}
}
return source;
}
/**
* Make the URL to get the specified tile
*/
public String makeURL(int inLayerNum, int inZoom, int inX, int inY)
{
// Check if the base url has a [1234], if so replace at random
String path = SiteNameUtils.pickServerUrl(getBaseUrl(inLayerNum));
if (path.indexOf('{') < 0) {
return path + inZoom + '/' + inX + '/' + inY +
'.' + getFileExtension(inLayerNum);
}
return path.replace("{z}", Integer.toString(inZoom))
.replace("{x}", Integer.toString(inX))
.replace("{y}", Integer.toString(inY));
}
/**
* @return maximum zoom level
*/
public final int getMaxZoomLevel()
{
return _maxZoom;
}
/**
* @return semicolon-separated list of all fields
*/
public String getConfigString()
{
return "o:" + getName() + ";" + getSiteStrings() + getMaxZoomLevel();
}
}
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